/Engine/Plugins/Compositing/Composure/Source/Composure/Classes/ComposureBlueprintLibrary.h
Request redrawing the compositing editor viewport if it is valid. If it is invalid, this function will create a new view port client.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Composure|Manager") static void RequestRedrawComposureViewport()